Method of manufacturing electrode for electrochemical capacitor and apparatus for manufacturing electrode for electrochemical capacitor

Abstract

An apparatus comprises a coating portion which forms, on a collector, a coated film comprising porous particles, a binder which binds the porous particles, and a solvent which dissolves the binder, a hot-air drying portion which forms a polarizable electrode layer by hot-air drying of the coated film, and an infrared ray drying portion which performs infrared ray drying of the polarizable electrode layer. By this means, solvent remaining after hot-air drying can be efficiently removed. Hence hot-air drying can be performed gently, and as a result, binder movement and similar can be prevented. Moreover, because infrared ray irradiation is performed in a state in which drying has been performed to some extent, bumping of solvent does not occur.

1 . A method of manufacturing electrodes for electrochemical capacitors, comprising: 
 a fist step of forming, on a collector, a coated film comprising porous particles, a binder which binds said porous particles, and a solvent which dissolves said binder,    a second step of forming a polarizable electrode layer by hot-air drying of said coated film; and    a third step of infra ray drying of said polarizable electrode layer.    
     
     
         2 . The method of manufacturing electrodes for electrochemical capacitors according to  claim 1 , wherein 
 said third step is performed by irradiating said polarizable electrode layer with infrared rays wile applying hot air to said polarizable electrode layer.    
     
     
         3 . The method of manufacturing electrodes for electrochemical capacitors according to  claim 1 , further comprising a fourth step of roller-pressing of said polarizable electrode layer after said second step and before said third step.  
     
     
         4 . The method of manufacturing electrodes for electrochemical capacitors according to  claim 3 , wherein 
 said first step, said second step, and said fourth step are performed continuously.    
     
     
         5 . The method of manufacturing electrodes for electrochemical capacitors according to  claim 3 , wherein 
 said fourth step is a step of performing roller-pressing at a linear pressure of less than 100 kg/cm while heating said polarizable electrode layer.    
     
     
         6 . An apparatus for manufacturing electrodes for electrochemical capacitors, comprising: 
 coating means for forming, on a collector, a coated film comprising porous particles, a binder which binds said porous particles, and a solvent which dissolves said binder,    hot-air dying means for forming a polarizable electrode layer by hot-air drying of said coated film; and    infrared drying means for performing infrared ray drying of said polarizable electrode layer.